Table 1 Patient’s characteristics and IVF parameters
From: The effect of short term exposure to outdoor air pollution on fertility
Clinical pregnancy | No pregnancy | Miscarriage | p* | |
|---|---|---|---|---|
Mean ± standard deviation / Median (p25, p75) / n (%) | ||||
Maternal age, years | 36.44 ± 0.33 | 37.20 ± 0.25 | 36.39 ± 0.44 | 0.109 |
BMI | 22.60 (0.36) | 22.91 (0.22) | 23.62 (0.41) | 0.120 |
Normal weight (18-24.9 kg/m2) | 65 (69.15) | 177 (79.02) | 69 (74.19) | 0.187 |
Overweight (25-29.9 kg/m2) | 16 (17.02) | 33 (14.73) | 16 (17.20) | |
Obesity (≥ 30 kg/m2) | 3 (3.19) | 7 (3.13) | 5 (5.38) | |
Active smokers (%) | 16 (14.29) | 42 (15.50) | 17 (16.50) | 0.990 |
Smoking status (pack/day) | 0.30 (0.20, 0.55) | 0.40 (0.25, 0.60) | 0.50 (0.30, 0.50) | 0.880 |
Low socio-economic status | 43 (41.35) | 114 (46.34) | 58 (53.19) | 0.246 |
Sedentarism | 76 (68.47) | 208 (76.75) | 73 (70.87) | 0.332 |
Mediterranean diet (score) | 14.5 (15, 20) | 17 (15, 19) | 17 (16, 20) | 0.294 |
Ovarian stimulation | ||||
Agonist (%) | 19 (16.96) | 51 (18.82) | 16 (15.53) | 0.738 |
Antagonist (%) | 93 (83.04) | 220 (81.18) | 87 (84.47) | |
Duration of stimulation, days | 11 (9, 12) | 11 (10, 12) | 11 (10, 12) | 0.786 |
No. MII Oocytes retrieved | 8 (6, 11) | 7 (4, 11) | 9 (5,14) | 0.029 |
No. Embryos fertilized | 5 (3, 7) | 4 (3, 7) | 5 (4, 8) | 0.019 |
Fresh embryo transfers (%) | 39 (34.82) | 80 (29.52) | 26 (25.24) | 0.304 |
No. Embryos transferred | 1.59 ± 0.51 | 1.52 ± 0.52 | 1.64 ± 0.52 | 0.092 |
Blastocyst transfer (%) | 30 (26.79) | 31 (11.44) | 23 (22.33) | <0.001 |